Lantern-slide carrier.



D. A. RITCHIE.

Patented Feb. 29, 1916.

WITNESSES: l/Vl/E/VTOR ATTORNEYS D. A. RITCHIE.

LANTERN SLIDE CARRIER.

APPLICATION FILED MAY 12. 1915.

1,173,746., Patented Feb. 29,1916.v

2 SHEETS-SHEET 2- W/T/VESSES. IN [/5 N TOR A TTOR/VEYS DAVID A. RITCHIE, 0F CENTRALIA, ILLINOIS.

LANTERN-SLIDE CARRIER.

Specification of Letters Patent.

Patented Feb. 29 11936.

Application filed May 12, 1915. Serial No. 27,655.

To all whom it may concern:

Be it known that 1, DAVID A. RITCHIE, a citizen of the United States, and a resident of Centralia, in the county of Marion and State of lllinois,-have invented a new and useful Improvement in Lantern-Slide Carriers, of which the following is a specification.

My invention is an improvement in lantern slide carriers; and, the: invention has for its object to provide a carrier of the character specified, comprising a drum having" illuminating mechanism within the same and mounted for rotation about the said mechanism and provided with peripheral apertures and holding means at the apertures for the slides, together with means for rotating the drum to bring any desired slide in position to be projected in the drawings':Figure 1 is a perspective view of the improved carrier, Fig. 2 is a horizontal section, figs. 3 and i are sections on the lines 3-3 and 4i-4, respectively, of Fig. 52, and Fig. 5 is an enlarged detail section through the drum.

The present embodiment of the invention comprises a drum consisting of parallel laterally spaced disks 1, each of which has a central internally extending hub portion 2 to be later described. The hub portions are in alinernent and are journaled on a shaft 3, which is supported in standards The standards have feet 5, which may be secured "be a floor or other supporting surface, and a ring secured to each disk at the periphery thereof. Each ring is otiangle material, comprising a portion 6 fitting the outer face tne disk, and a portion 6 extending inwardly at right angles to the plane of the disk, the portion 6 of each ring being seured to the disk by means of 'F or or bars 8 are arr .nged transversely of ks between same, and the periphery thereof, each bar being connected to the two rings of the disks and to the portions of the rings. is will be seen from an inspection of Figs. 3, and 5 each of the strips er bars 8 is grooved in its opposite sides, and the said grcoves are adapted to receive the side edges of the slides 9.

It will be noted that strips or hare 8 are E-shaped in cross section and they are spaced apart from each other just far enough-to receive the slides between the adjacent strips orbars. The strips or bars provide guides for the slides, and the adj acent portions 6 of the rings are spaced apart farenough to permit all of that portion of the slides which carry the picture to be at the opening. That is, the portion 6 of, the rings are spaced apart to form an annular slot or passage at the periphery of the drum, and this slot or passage has a width corresponding to the length of the pictured portion of the slide.

The hub portions 2 are spaced apart from each other at their inner ends to leave a space between the said ends, and illuminating apparatus is mounted on the shalt between the hub portions. This apparatus as shown more particularly in Figs. 2 and a comprises an angle bracket 10, having a hub orbearing 11, which encircles the shaft 3 between the adjacent ends of the hub portions.

A counterweight 12 is connected with one of the portions of the angle bracket, and i luminating mechanism is connected with the other portion of the bracket. The relative weight of the parts is such that the illuminating apparatus, which is arranged in a cylindrical container will he held with its axis horizontal and perpendicular to the shaft 3, w =e the weight 12 will depend below the shaft.

The an aratus compris s the casing 13, having s outer end open and flared as shcwn at 14-, having at its top a hooded outlet .1 for the heated gases. The illuminating mechanism proper is an incandescent Toulh 16, supported in a suitable socket l? loelow he-hood l5, and a reflector 18 is arranged ioehind the socket. A suitable condenser W is arranged at the outer end of the casing between the flared portion and the body of casing. "it will be evident since the illuminating apparatus is counterbalanced on the shaft, that when the drum is rotate the said apparatus will hold the position or i and 2.

Projecting apparatus indicated generally at la is arranged outside of the drum directiy in line with the illuminating apparatus, so that the light rays thrown by the said aratns will pass through the slide and through the projecting apparatus. This projecting apparatus is supported by telescoping legs or standards, each of which comprises an outer tubular member 20, having a foot 21 for permitting the said member to be secured to the floor or like support and an inner member 22 slidable in the outer member.

The sections of each leg are held in adjusted position by means of a set screw 23 threaded through the outer member and engaging the inner member. The inner members are connected to the base of the projecting apparatus'in any suitable or desired manner, and it will be evident that by loosening the set screws 23 the said supports may be raised or lowered and may be held in adjusted position.

The legs 4 before mentioned, are a part of a frame, consisting of the said legs and other legs 4 arranged on opposite sides of the projecting apparatus and in register with the adjacent legs 4. Each leg 4 has a foot 5*, for permitting it to be secured to the floor and the upper ends of the adjacent legs 4 and 4 are connected by horizontal tubular rods or bars 24.

The drum is'rotated by a suitable motor 25, an electrical motor in the present instance, the shaft of which is provided with a pulley 26, and the motor is arranged adj acent to the drum at one end thereof. A table or plate 27 is secured to the bar 24 adjacent to the motor by means of clips 28 on the under side of the plate or table, the said clips embracing the bar 24.

A bracket29; is secured to the-outer end of the plate or table, and a shaft 30 is journaled in the bracket parallel to the bar 24. This shaft has a pulley 31 at its outer end, and the pulley is connected to the pulley 26 by means of a belt 32. A worm 33 is secured to the shaft between the bearings 34 in which the shaft is journaled, and the worm is engaged by a worm wheel 35 on a shaft 36, journaled parallel with the shaft 3.

The worm wheel 35 is secured to the shaft 36 by means of a set screw 37, and the said shaft 36 is journaled in the bracket 29. A mutilated gear wheel 38 is secured to the inner end of the shaft 36, and a disk or fly wheel 39 is secured to the outer end of the shaft. The gear wheel is provided with a series of teeth which are adapted to mesh with a pinion 40 on a stub shaft 41, journaled in an upright or standard 42, extending upwardly from the table, and this stub shaft is provided with a radial arm 43, having at its outer end a laterally extending pin 44. The pin is adapted to'engage the notches in a wheel or disk 46, secured to the shaft 3.

It will be evident that when the shaft 30 is rotated by the motor, the shaft 36 will be driven thereby, driving the disk 38. Once during each complete rotation of the disk the teeth thereof will engage and impart to the'pinion 40 a complete rotation, there being the same number of teeth on the disk as there is on the pinion.

At each complete rotation of the shaft 41, the radial arm 43 will be revolved about the shaft, and for every complete revolution of the arm the disk or wheel 46 will be moved the distance between two adjacent notches, and the spacing of the notches corresponds to the spacing of the bars or strips 8. That is, every time the disk 46 is moved the distance between two notches one of the slides is moved away from in front of the illuminating apparatus, and another slide is brought into proper position before the same.

The disks 1 are provided with openings 47, which are normally covered by damper plates 48. These plates are pivoted to the disks at 49 to swing over and away from over the openings 47. Each of the plates has a finger piece 50 for convenience in manipulating the same, and it will be obvious that the said plates may be arranged to uncover more or less of the openings as may be desired.

Each of the hub portions 2 is provided with a radial flange or rib 51, which fits against the outer face of the disk, and is secured thereto by rivets 52 or'the like. The disk or wheel 46 has a similar hub 53, which is secured to the disk in the same manner by rivets 54.

The operation of the carrier is as follows:The slides are inserted in the guideways by moving them laterally and they are arranged directly over the annular passage between adjacent edges of the portions 6 of the rings. When the slides are properly placed, the motor is started. The motor will drive the drum, bringing the slidesin succession between the illuminating and the projecting apparatus, and it will be evident that the pictures on the slides will be projected onto the screen.

By providing slides in series moving pic- .ture effects may be obtained. There is a positive stop between each movement of the drum, and with properly prepared slides moving pictures may be projected. The lamp support or illuminating apparatus retains its proper position regardless of the movement of the drum.

I claim In a device of the character specified, a drum consisting of two spaced parallel disks,

each having a hub, grooved strips connecting the peripheries of the disks and arranged at spaced intervals, said strips being grooved on the opposite faces to receive lantern slides between them, the strips and disks being spaced to leave an aperture of the proper size to permit the picture on the slide to be projected on the screen, a hollow shaft on which the drum is journaled, a supporting frame for the shaft, an angle bracket I mounted on the shaft between the hubs and of the controlling mechanism for the illu- 10 minating apparatus, said disks having damper; controlled air inlets, and means for rotating the drum.

DAVID A. RITCHIE.

Witnesses: Y GEO. RITCHIE, S. B. WARREN, 

